[PATCHv2 2/3] ath10k: don't wait for device init if it crashed

[Michal Kazior]

When warm resetting it's possible for device to
crash during initialization. Instead of waiting 3
seconds just return failure as soon as
FW_IND_EVENT_PENDING is set.

This speeds up device bootup and recovery in some
cases.

Signed-off-by: Michal Kazior <michal.kazior at tieto.com>
---
v2:
 * add a comment before if() [Kalle]

 drivers/net/wireless/ath/ath10k/pci.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index cd3b00c..66b1f30 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -2452,6 +2452,10 @@ static int ath10k_pci_wait_for_target_init(struct ath10k *ar)
 		if (val == 0xffffffff)
 			continue;
 
+		/* the device has crashed so don't bother trying anymore */
+		if (val & FW_IND_EVENT_PENDING)
+			break;
+
 		if (val & FW_IND_INITIALIZED)
 			break;
 
@@ -2470,6 +2474,12 @@ static int ath10k_pci_wait_for_target_init(struct ath10k *ar)
 		goto out;
 	}
 
+	if (val & FW_IND_EVENT_PENDING) {
+		ath10k_warn("device has crashed during init\n");
+		ret = -ECOMM;
+		goto out;
+	}
+
 	if (!(val & FW_IND_INITIALIZED)) {
 		ath10k_err("failed to receive initialized event from target: %08x\n",
 			   val);
-- 
1.8.5.3